Noun. A person who wears Google Glass and refuses to remove it when directly interacting with other people, private gatherings, or public events. The general belief is that these people are photographing, recording, Googling, and Facebooking the people they're interacting with instead of focusing on the conversation or acting like a human being. In extreme cases this word is directly synonymous with stalker or creeper.

"Yeah, I ran into Bill. He wouldn't take off those damn Google spyglasses the entire time we were talking. What a glasshole."

"Look there, under the bleachers. Some glasshole is looking up women's skirts!"

"...So the glasshole meets this girl and looks her up online, finds out everything about her, and is waiting for her in her front yard when she gets home that night. That was when she maced him and called the cops."